Question

Solar cells are often coated with a transparent, thin film of silicon monoxide (n = 1.45) to minimize reflective losses from the surface. Suppose a silicon solar cell (n = 3.5) is coated with a thin film of silicon monoxide. Determine the minimum film thickness that produces the least reflection at a wavelength of 550 nm.

Answer 1

Answer:

94.82 nm

Explanation:

We have given that wavelength $\lambda=550\ nm$

We have to find the minimum film thickness that produces the least reflection

minimum thickness is given by $t=\frac{\lambda }{4n}$

here n is given n=1.45

so minimum thickness $t=\frac{550 }{4\times 1.45}=94.82\ nm$

so the minimum film thickness will be 94.82 nm